Thanks for reply. I done as suggested. But still no luck. I can't get a 4k picture at anything over 30Hz. I'm out of ideas? The TV's manual states that the HDMI signal format must be set to "advanced" to receive a picture at 4K 60hz. Standard HDMI signal format is only sufficient up to 30hz for 4K. Here's what I've tried so far: 1) Replacing the HDMI cable with a
brand new one (the new one is HDMI 2.0 certified and
can do 4k at 60hz).
(from cables.co.uk)2) Ensuring TV's HDMI signal is set to "advanced" and not "standard" format.
3) Uninstalling ALL Nvidia, AMD & Intel GPU drivers using the "DDU" utility.
(as posted above). Rebooting, then re-installing
only the Nvidia software/drivers.
4) Running a full in-depth virus scan using the latest edition of AVG
& running a full Windows Defender scan.
5) Resetting TV back to factory defaults.
6) Checked that intel's iGPU is disabled in system BIOS. (and confirming this by checking in Windows that it's not displayed in GPU-Z -- which it
isn't)!
7) Tried different HDMI ports on TV. (despite the fact the TV settings give option for "standard" and "advanced" for ALL ports.
What works:
TV HDMI signal set to "standard":
- 1080p 60hz
- 4k but only up to 30hz
TV HDMI Signal set to "advanced":
Getting desperate now! :-(
Note: I HAVE been able to get a 4k 60hz picture on this TV before. It used to work perfectly. Until my old cable seemed faulty. Which I replaced
(as mentioned above as the 1st thing I tried).
post edited by nrpeyton - 2018/01/28 17:34:29